Golang如何在机器学习管道中发挥作用？

// 导入必要的库
import (
    "encoding/csv"
    "fmt"
    "io"
    "log"
    "math"
    "os"
    "strconv"

    "github.com/gonum/stat"
    "gonum.org/v1/plot"
    "gonum.org/v1/plot/plotter"
    "gonum.org/v1/plot/plotutil"
    "gonum.org/v1/plot/vg"
)

// 数据结构
type DataPoint struct {
    X float64
    Y float64
}

// 加载和预处理数据
func loadData(path string) ([]DataPoint, error) {
    file, err := os.Open(path)
    if err != nil {
        return nil, err
    }
    defer file.Close()

    data := []DataPoint{}
    reader := csv.NewReader(file)
    for {
        line, err := reader.Read()
        if err != nil {
            if err == io.EOF {
                break
            }
            return nil, err
        }
        x, err := strconv.ParseFloat(line[0], 64)
        if err != nil {
            return nil, err
        }
        y, err := strconv.ParseFloat(line[1], 64)
        if err != nil {
            return nil, err
        }
        data = append(data, DataPoint{X: x, Y: y})
    }
    return data, nil
}

// 数据标准化
func scaleData(data []DataPoint) {
    xMean := stat.Mean(data, func(d DataPoint) float64 { return d.X })
    xStdDev := stat.StdDev(data, func(d DataPoint) float64 { return d.X })
    yMean := stat.Mean(data, func(d DataPoint) float64 { return d.Y })
    yStdDev := stat.StdDev(data, func(d DataPoint) float64 { return d.Y })
    for i := range data {
        data[i].X = (data[i].X - xMean) / xStdDev
        data[i].Y = (data[i].Y - yMean) / yStdDev
    }
}

// 训练线性回归模型
func trainModel(data []DataPoint) *stat.LinearRegression {
    xs, ys := extractXY(data)
    model := stat.LinearRegression{}
    model.Fit(xs, ys)
    return &model
}

// 绘制数据和模型
func plotData(data, regressionPoints []DataPoint) {
    p, err := plot.New()
    if err != nil {
        log.Fatal("Failed to create plot:", err)
    }